Implication of injection water salinity on flow capacity
Measurement of differential pressure and permeability were taken at variable PV flooded for three different brine salinities. As discussed in the results, permeability decreased as flooding…
Category: Engineering
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GAAOA-Lévy: a hybrid metaheuristic for optimized multilevel thresholding in image segmentation
Genetic algorithm (GA)
GA is a search technique used by computers to locate precise or actual response to search and optimization issues. Worldwide search algorithms are a category that includes GAs. There are various evolutionary algorithms that…
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The mechanism of permeability enhancement of coal seams by hydraulic fracturing based on the characterization of coal physical properties
Size distribution
Figure 3 shows the particle size distribution results for the three coal samples. The minimum measurable particle size is 0.2 μm; however, the data for the 0.2–1 μm range were zero for the experimental samples. Therefore,…
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Additively manufactured lightweight coaxial to circular waveguide transition for linearly polarized microwave systems
Waveguides and transitions provide efficient Electromagnetic (EM) wave transmission while integrating with RF chain microwave or millimeter-wave systems elements such as mixers, amplifiers, filters, resonators, or antenna feeds for satellite…
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Evaluation of rice husk biochar influence as a partial cement replacement material on the physical, mechanical, microstructural, and radiation shielding properties of ordinary concrete
Akhtar, A. & Sarmah, A. K. Novel biochar-concrete composites: Manufacturing, characterization and evaluation of the mechanical properties. Sci. Total Environ. 616, 408–416 (2018).
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Degradation of anti-wear additives and tribological properties of engine oils at extended oil change intervals in city buses
Tribological analysis—four-ball T-02U apparatus
The results of the seizure resistance of the tested oils, as well as the average values of the wear scar diameter on the balls, are presented in Table 5.
Table 5 Results of the tests carried out on… Continue Reading
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Redefining IoT networks for improving energy and memory efficiency through compressive sensing paradigm
In this research work first order energy model45 is considered and mathematically expressed as given in the Eqs. 1 and 2 as
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Torque and speed prediction of a brushless direct current motor using nonlinear autoregressive with exogenous inputs and neural network
Simulation of BLDC motor in simulink
Simulation of BLDC motor is carried out in Simulink with a multistep DC input Voltage signal fed to three-phase inverter, which gives phase voltages to the BLDC motor block. The gate signals of inverter are fed…
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Continuous reuse of polyamide 12 in powder bed fusion
Dual-beam laser sintering device
DBLS is an original modification of the standard PBF-LB/P process, in which the polymer preheating step in the process chamber (typically based on the use of heaters) is replaced by irradiation with a second laser…
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Studying the changes in the pressure transmission coefficient of the ultrasonic waves for ferrous and non-ferromagnetic alloys to find some of the most significant mechanical properties
PTC denotes the pressure amplitude of the transmitted wave between two materials. Theuse of PTC is nothing new in mechanical tests25,26, but the use of pure magnesium metal as a constant metal in each test is a different matter from other tests….
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